ADD missing closing li tag

production/plain_page.html

@@ -129,6 +129,7 @@
                   <li><a><i class="fa fa-sitemap"></i> Multilevel Menu <span class="fa fa-chevron-down"></span></a>
                     <ul class="nav child_menu">
                         <li><a href="#level1_1">Level One</a>
+                        </li>
                         <li><a>Level One<span class="fa fa-chevron-down"></span></a>
                           <ul class="nav child_menu">
                             <li class="sub_menu"><a href="level2.html">Level Two</a>